| SPECIFICATIONS |
| Brand | ASRock |
| Series | Steel Legend |
| Model | B550 Steel Legend |
| CPU | Supports 3rd Gen AMD AM4 Ryzen / future AMD Ryzen Processors* |
| Digi Power design |
| 14 Power Phase design |
| *Not compatible with AMD Ryzen 5 3400G and Ryzen 3 3200G. |
| Chipset | AMD B550 |
| Memory | Dual Channel DDR4 Memory Technology |
| 4x DDR4 DIMM Slots |
| AMD Ryzen series CPUs (Matisse) support DDR4 4733 (OC) / 4666(OC) / 4600(OC) / 4533(OC) / 4466(OC) / 4400(OC) / 4333(OC) / 4266(OC) / 4200(OC) / 4133(OC) / 4000(OC) / 3866(OC) / 3800(OC) / 3733(OC) / 3600(OC) / 3466(OC) / 3200 / 2933 / 2667 / 2400 / 2133 ECC & non-ECC, un-buffered memory* |
| AMD Ryzen series APUs (Renoir) support DDR4 4733 (OC) / 4666(OC) / 4600(OC) / 4533(OC) / 4466(OC) / 4400(OC) / 4333(OC) / 4266(OC) / 4200(OC) / 4133(OC) / 4000(OC) / 3866(OC) / 3800(OC) / 3733(OC) / 3600(OC) / 3466(OC) / 3200 / 2933 / 2667 / 2400 / 2133 ECC & non-ECC, un-buffered memory* |
| Max. capacity of system memory: 128GB** |
| Supports Extreme Memory Profile (XMP) memory modules |
| 15μ Gold Contact in DIMM Slots |
| **Due to the operating system limitation, the actual memory size may be less than 4GB for the reservation for system usage under Windows 32-bit OS. For Windows 64-bit OS with 64-bit CPU, there is no such limitation. |
| BIOS | 256Mb AMI UEFI Legal BIOS with GUI support |
| Supports "Plug and Play" |
| ACPI 5.1 compliance wake up events |
| Supports jumperfree |
| SMBIOS 2.3 support |
| CPU, CPU VDDCR_SOC, DRAM, VPPM, VTT_DDR Offset, CPU VDD 1.8 Voltage Multi-adjustment |
| Graphics | Integrated AMD Radeon Vega Series Graphics in Ryzen Series APU* |
| DirectX 12, Pixel Shader 5.0 |
| Shared memory default 2GB. Max Shared memory supports up to 16GB.** |
| Dual graphics output: support HDMI and DisplayPort 1.4 ports by independent display controllers |
| Supports HDMI 2.1 with max. resolution up to 4K x 2K (4096x2160) @ 60Hz |
| Supports DisplayPort 1.4 with max. resolution up to 5K (5120x2880)@120Hz |
| Supports Auto Lip Sync, Deep Color (12bpc), xvYCC and HBR (High Bit Rate Audio) with HDMI 2.1 Port (Compliant HDMI monitor is required) |
| Supports HDR (High Dynamic Range) with HDMI 2.1 |
| Supports HDCP 2.3 with HDMI 2.1 and DisplayPort 1.4 Ports |
| Supports 4K Ultra HD (UHD) playback with HDMI 2.1 and DisplayPort 1.4 Ports |
| Supports Microsoft PlayReady |
| *Actual support may vary by CPU |
| **The Max shared memory 16GB requires 32GB system memory installed. |
| Audio | 7.1 CH HD Audio with Content Protection (Realtek ALC1220 Audio Codec) |
| Premium Blu-ray Audio support |
| Supports Surge Protection |
| 120dB SNR DAC with Differential Amplifier |
| NE5532 Premium Headset Amplifier for Front Panel Audio Connector (Supports up to 600 Ohm headsets) |
| Pure Power-In |
| Direct Drive Technology |
| PCB Isolate Shielding |
| Impedance Sensing on Rear Out port |
| Individual PCB Layers for R/L Audio Channel |
| Gold Audio Jacks |
| 15μ Gold Audio Connector |
| Nahimic Audio |
| LAN | 2.5 Gigabit LAN 10/100/1000/2500 Mb/s |
| Dragon RTL8125BG |
| Supports Dragon 2.5G LAN Software |
| Smart Auto Adjust Bandwidth Control |
| Visual User Friendly UI |
| Visual Network Usage Statistics |
| Optimized Default Setting for Game, Browser, and Streaming Modes |
| User Customized Priority Control |
| Supports Wake-On-LAN |
| Supports Lightning/ESD Protection |
| Supports Energy Efficient Ethernet 802.3az |
| Supports PXE |
| Slots | AMD Ryzen series CPUs (Matisse) |
| 2x PCI Express x16 Slots (PCIE1: Gen4x16 mode; PCIE3: Gen3 x4 mode)* |
| AMD Ryzen series APUs (Renoir) |
| 2x PCI Express x16 Slots (PCIE1: Gen3x16 mode; PCIE3: Gen3 x4 mode)* |
| 2x PCI Express 3.0 x1 Slots |
| Supports AMD Quad CrossFireX and CrossFireX |
| 1x M.2 Socket (Key E), supports type 2230 WiFi/BT module |
| 15μ Gold Contact in VGA PCIe Slot (PCIE1) |
| *Supports NVMe SSD as boot disks |
| Storage | 6x SATA3 6.0 Gb/s Connectors, support RAID (RAID 0, RAID 1 and RAID 10), NCQ, AHCI and Hot Plug* |
| 1x Hyper M.2 Socket (M2_1), supports M Key type 2230/2242/2260/2280 M.2 PCI Express module up to Gen4x4 (64 Gb/s) (with Matisse) or Gen3x4 (32 Gb/s) (with Renoir)** |
| 1x M.2 Socket (M2_2), supports M Key type 2230/2242/2260/2280/22110 M.2 SATA3 6.0 Gb/s module and M.2 PCI Express module up to Gen3 x2 (16 Gb/s)** |
| *M2_2 and SATA3_5_6 share lanes. If either one of them is in use, the other one will be disabled. |
| **Supports NVMe SSD as boot disks |
| Supports ASRock U.2 Kit |
| Connector | 1x SPI TPM Header |
| 1x Power LED and Speaker Header |
| 2x RGB LED Headers* |
| 2x Addressable LED Headers** |
| 1x CPU Fan Connector (4-pin)*** |
| 1x CPU/Water Pump Fan Connector (4-pin) (Smart Fan Speed Control)**** |
| 5x Chassis/Water Pump Fan Connectors (4-pin) (Smart Fan Speed Control)***** |
| 1x 24 pin ATX Power Connector (Hi-Density Power Connector) |
| 1x 8 pin 12V Power Connector (Hi-Density Power Connector) |
| 1x 4 pin 12V Power Connector (Hi-Density Power Connector) |
| 1x Front Panel Audio Connector (15μ Gold Audio Connector) |
| 2x USB 2.0 Headers (Support 4 USB 2.0 ports) (Supports ESD Protection) |
| 1x USB 3.2 Gen1 Header (Supports 2 USB 3.2 Gen1 ports) (Supports ESD Protection) |
| 1x Front Panel Type C USB 3.2 Gen1 Header (Supports ESD Protection) |
| 1x Dr. Debug with LED |
| *Support in total up to 12V/3A, 36W LED Strip |
| **Support in total up to 5V/3A, 15W LED Strip |
| ***The CPU Fan Connector supports the CPU fan of maximum 1A (12W) fan power. |
| ****CPU_FAN2/WP_3A supports the water cooler fan of maximum 3A (36W) fan power. |
| *****The Chassis/Water Pump Fan supports the water cooler fan of maximum 2A (24W) fan power. |
| CPU_FAN2/WP_3A, CHA_FAN1/WP, CHA_FAN2/WP, CHA_FAN3/WP, CHA_FAN4/WP and CHA_FAN5/WP can auto detect if 3-pin or 4-pin fan is in use. |
| Rear Panel I/O | 2x Antenna Mounting Points |
| 1x PS/2 Mouse/Keyboard Port |
| 1x HDMI Port |
| 1x DisplayPort 1.4 |
| 1x Optical SPDIF Out Port |
| 1x USB 3.2 Gen2 Type-A Port (10 Gb/s) (Supports ESD Protection) |
| 1x USB 3.2 Gen2 Type-C Port (10 Gb/s) (Supports ESD Protection) |
| 2x USB 3.2 Gen1 Ports (Supports ESD Protection) |
| 4x USB 2.0 Ports (Supports ESD Protection)* |
| 1x RJ-45 LAN Port with LED (ACT/LINK LED and SPEED LED) |
| HD Audio Jacks: Rear Speaker / Central / Bass / Line in / Front Speaker / Microphone (Gold Audio Jacks) |
| *Ultra USB Power is supported on USB_34 ports. |
| ACPI wake-up function is not supported on USB_34 ports. |
| Software and UEFI | Software |
| - ASRock Motherboard Utility (A-Tuning) |
| - ASRock Dragon 2.5G LAN Software |
| - ASRock Polychrome SYNC* |
| UEFI |
| - ASRock Full HD UEFI |
| - ASRock Instant Flash |
| *These utilities can be downloaded from ASRock Live Update & APP Shop. |
| Support CD | Drivers, Utilities, AntiVirus Software (Trial Version), Google Chrome Browser and Toolbar |
| Accessories | Quick Installation Guide, Support CD |
| 2x SATA Data Cables |
| 3x Screws for M.2 Sockets |
| 2x Standoffs for M.2 Sockets |
| Hardware Monitor | Temperature Sensing: CPU, CPU/Water Pump, Chassis/Water Pump Fans |
| Fan Tachometer: CPU, CPU/Water Pump, Chassis/Water Pump Fans |
| Quiet Fan (Auto adjust chassis fan speed by CPU temperature): CPU, CPU/Water Pump, Chassis/Water Pump Fans |
| Fan Multi-Speed Control: CPU, CPU/Water Pump, Chassis/Water Pump Fans |
| Voltage monitoring: 12V, 5V, 3.3V, CPU Vcore, CPU VDDCR_SOC, DRAM, VPPM, CPU VDD 1.8V |
| Form Factor | ATX Form Factor |
| 30.5 cm x 24.4 cm |
| 2oz Copper PCB |
| OS | Microsoft Windows 10 64-bit |
| Certifications | FCC, CE |
| ErP/EuP ready (ErP/EuP ready power supply is required) |
| Warranty Information |
| Warranty | 3 Year Warranty |
In stock with Wootware
